update-model-pricinglisted

# Update model pricing Claude Meter estimates the dollar cost of local Claude Code usage from a hardcoded rate card. This skill updates that rate card. ## The single source of truth File: `ClaudeMeterCore/Sources/ClaudeMeterCore/ModelPricing.swift` Static: `ModelPricing.current` It holds three family `Rate`s, each in **USD per million tokens (MTok)** with four fields: `input`, `output`, `cacheRead`, `cacheWrite` (cacheWrite = the 5-minute cache-creation rate). Families are matched by substring: `opus`, `haiku`, else `sonnet` (the default for any unrecognized id). ```swift public static let current = ModelPricing( opus: Rate(input: 15, output: 75, cacheRead: 1.50, cacheWrite: 18.75), sonnet: Rate(input: 3, output: 15, cacheRead: 0.30, cacheWrite: 3.75), haiku: Rate(input: 1, output: 5, cacheRead: 0.10, cacheWrite: 1.25) ) ``` ## Steps 1. **Get the prices.** If the user supplied them, use those. Otherwise look up Anthropic's current published pricing (e.g. https://www.anthropic.com/pricing or the docs pricing page) for Opus, Sonnet, and Haiku — input, output, prompt-cache **read**, and prompt-cache **write (5-minute)**, all per MTok. Confirm the numbers with the user before editing if you had to look them up. 2. **Edit `ModelPricing.current`** in the file above. Only change the numbers; keep the structure, comments, and the substring-matching logic intact. 3. **Update the tests if a changed number is asserted.** `ClaudeMeterCoreTests/Cost